Lilemong tsa morao tjena, ts'ebeliso ea lipolasetiki tse khethehileng tsa boenjiniere e 'nile ea atoloha butle-butle ho tloha masimong a pele a sesole le a sefofane ho ea libakeng tse ntseng li eketseha tsa baahi, tse kang likoloi, tlhahiso ea lisebelisoa le thepa ea boleng bo phahameng ea bareki. Har'a tsona, polyphenylene sulfide (PPS) le polyetheretherketone (PEEK) ke mefuta e 'meli ea lipolasetiki tse khethehileng tsa boenjiniere tse nang le nts'etsopele e potlakileng le mefuta e mengata ea ts'ebeliso.
PEEK e phahametse PPS mabapi le matla, boima, le mocheso o phahameng oa ho sebetsa. Mabapi le ho hanyetsa mocheso o phahameng, khanyetso ea mocheso oa PEEK e ka ba 50 ° C holimo ho feta ea PPS. Ka lehlakoreng le leng, melemo ea litšenyehelo e batlang e totobetse le ts'ebetso e ntle ea ts'ebetso ea PPS e etsa hore e sebelisoe haholo.
PPS e na le melemo e latelang ea ts'ebetso:
(1) Ka hare ho lelakabe retardant
Different from PC and PA, PPS pure resin and its glass fiber/mineral powder filled composites can easily achieve V-0 @ 0.8mm or even thinner thickness V-0 flame retardant without adding any flame retardant level. Although PC and PA have cheaper prices and better mechanical strength (especially impact strength) than PPS, the cost of PC and PA composites with halogen-free flame retardant formulations (V-0@0.8mm level) is higher than that of PPS. It will rise sharply, and in many cases even higher than PPS materials with the same mechanical strength.
(2) Mokelikeli o phahameng haholo
Tšimong ea kopo ea sekoahelo sa libuka, monyetla ona o totobetse ho feta oa PC. Keketso e phahameng e ke ke ea ama metsi a thepa ka botebo feela le ho baka mathata a ho sebetsa, empa hape e baka mathata a kang likhoele tse phaphametseng holim'a metsi, li-warpage tse tebileng, le thepa e fosahetseng ea mochini. Bakeng sa semi-crystalline PPS, mokelikeli oa eona o phahameng haholo o lumella ho tlatsoa ha fiber ea khalase ho feta 50%. Ka nako e ts'oanang, ts'ebetsong ea mocheso o phahameng oa ho qhibiliha ho kopanya le extrusion, viscosity e tlase ea PPS ha e bapisoa le PC e ka etsa hore likhoele tsa Glass li kene maemong a tlase a ho kuta le extrusion, e leng se etsang hore ho be le nako e telele ea ho boloka sengoloa sa ho qetela se entsoeng ka ente. e eketsa modulus.
(3) Ho monya metsi a tlase haholo
Molemo ona ke oa PA haholo. Mabapi le metsi, PA le PPS tse tletseng haholo lia bapisoa; le bakeng sa thepa ea mochini, li-composites tsa PA tse nang le chelete e lekanang ea ho tlatsa li atile le ho feta. Sephetho ke hore sekhahla sa bofokoli ba lihlahisoa tsa PPS ka lebaka la deformation ea ho monya metsi e tlase haholo ho feta ea lihlahisoa tsa PA tlasa maemo a tšoanang.
(4) Mokhoa o ikhethang oa tšepe le boima bo phahameng ba holim'a metsi
Ka ho kopana ha hlobo e khethehileng le mocheso o utloahalang oa hlobo, likarolo tsa ho bōpa ente ea PPS le tsona li tla ntša molumo o tšoanang le oa ho otla tšepe tlas'a ho ama matsoho a motho, 'me bokaholimo bo tla ba boreleli joaloka seipone, bo nang le tšepe e khanyang.
PEEK e na le litšobotsi tse latelang tse ikhethang:
(1) Ho hanyetsa mocheso o phahameng haholo.
E ka sebelisoa nako e telele ho 250 ° C, mocheso o ka fihla ho 300 ° C hang-hang, 'me e batla e senyehe ka nako e khutšoanyane ho 400 ° C.
(2) Thepa e babatsehang ea mechine le botsitso ba dimensional.
PEEK e ka boloka matla a phahameng mochesong o phahameng. Matla a ho kobeha ho 200 ° C a ntse a ka fihla ho 24 MPa, 'me matla a ho kobeha le matla a khatello ho 250 ° C a ka fihla ho 12-13 MPa. E loketse ka ho khetheha bakeng sa ho etsa lihlahisoa tse tsoelang pele ka mocheso o phahameng. likarolo tse sebetsang. PEEK e na le botsitso bo phahameng, botsitso bo botle ba sebopeho le coefficient e tlase ea katoloso ea mela, e haufi haholo le aluminium ea tšepe. Ho phaella moo, PEEK e boetse e na le khanyetso e ntle ea creep, e ka mamella khatello ea kelello e kholo nakong ea tšebeletso, 'me e ke ke ea baka katoloso e kholo ka lebaka la ho atolosoa ha nako.
(3) Ho hanyetsa lik'hemik'hale tse babatsehang.
PEEK e hanyetsa lik'hemik'hale tse ngata hantle, esita le ka mocheso o phahameng, ka ho hanyetsa kutu ho tšoana le tšepe ea nickel. Tlas'a maemo a tloaelehileng, ntho e le 'ngoe feela e ka qhaqhang PEEK ke concentrated sulfuric acid.
(4) Ho hanyetsa hantle ha hydrolysis.
E hanana le tšenyo ea lik'hemik'hale ka metsi kapa mouoane oa metsi o nang le khatello e phahameng. Tlas'a boemo ba mocheso o phahameng le khatello e phahameng, likarolo tsa PEEK li ka sebetsa ka ho tsoelang pele tikolohong ea metsi 'me li ntse li boloka thepa e ntle ea mochine. Joalo ka ho qoelisoa ho sa khaotseng metsing ka 100 ° C ka matsatsi a 200, matla a lula a batla a sa fetohe.
(5) Ts'ebetso e ntle e thibelang lelakabe.
E ka fihla ho tekanyo ea UL 94 V-0, ea itima, 'me e ntša mosi o monyenyane le likhase tse chefo tlas'a maemo a lelakabe.
(6) Ts'ebetso e ntle ea motlakase.
PEEK e boloka thepa ea motlakase ho feta mefuta e mengata ea maqhubu le mocheso.
(7) Ho hanyetsa mahlaseli a matla.
PEEK e na le sebopeho sa lik'hemik'hale se tsitsitseng haholo, 'me likarolo tsa PEEK li ka sebetsa hantle tlas'a tekanyo e phahameng ea mahlaseli a ionizing.
(8) Matla a matle.
Ho hanyetsa mokhathala ho fapanyetsana khatello ea maikutlo ke ntho e ntle ka ho fetisisa ho li-plastiki tsohle 'me e bapisoa le li-alloys.
(9) Khohlano e ntle haholo le ho hanyetsa ho roala.
Khanyetso e phahameng ea ho apara le coefficient e tlase ea likhohlano li bolokiloe ho 250 ° C.
(10) Ts'ebetso e ntle ea ts'ebetso.
Extrusion e bonolo le ho bopa ka ente, le bokhoni bo phahameng ba ho bopa.
Nako ea poso: 01-09-22